@mixin whb($w:100%,$h:50px,$b:transparent){
    width: $w;
    height: $h;
    background: $b;
    transform: rotate(360deg);
}

div{
    @include whb(100px,100px,red);
}

span{
    @include whb(200px,200px,blue);
    display: inline-block;
}
h1{
    @include whb(300px,300px,green);
}

.me{
    @include whb($b:yellow,$w:500px,$h:100px);
}


